Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

		Three Months Ended				Six Months Ended
			June 30,				June 30,
		2012		2011		2012		2011
Basic earnings per common share
	Net income attributable to Quaker Chemical Corporation	$	10,540	$	9,841	$	22,486	$	20,441
	Less: income allocated to participating securities		(101)		(182)		(289)		(384)
	Net income available to common shareholders	$	10,439	$	9,659	$	22,197	$	20,057
	Basic weighted average common shares outstanding		12,850,917		12,043,858		12,790,799		11,668,657
Basic earnings per common share		$	0.81	$	0.80	$	1.74	$	1.72
Diluted earnings per common share
	Net income attributable to Quaker Chemical Corporation	$	10,540	$	9,841	$	22,486	$	20,441
	Less: income allocated to participating securities		(100)		(180)		(288)		(380)
	Net income available to common shareholders	$	10,440	$	9,661	$	22,198	$	20,061
	Basic weighted average common shares outstanding		12,850,917		12,043,858		12,790,799		11,668,657
	Effect of dilutive securities, employee stock options		80,913		174,919		88,838		175,905
	Diluted weighted average common shares outstanding		12,931,830		12,218,777		12,879,637		11,844,562
Diluted earnings per common share		$	0.81	$	0.79	$	1.72	$	1.69